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[G4] MEMPROT support
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/* | ||
* This file is part of Cleanflight and Betaflight. | ||
* | ||
* Cleanflight and Betaflight are free software. You can redistribute | ||
* this software and/or modify this software under the terms of the | ||
* GNU General Public License as published by the Free Software | ||
* Foundation, either version 3 of the License, or (at your option) | ||
* any later version. | ||
* | ||
* Cleanflight and Betaflight are distributed in the hope that they | ||
* will be useful, but WITHOUT ANY WARRANTY; without even the implied | ||
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | ||
* See the GNU General Public License for more details. | ||
* | ||
* You should have received a copy of the GNU General Public License | ||
* along with this software. | ||
* | ||
* If not, see <http://www.gnu.org/licenses/>. | ||
*/ | ||
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#include "platform.h" | ||
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#include "memprot.h" | ||
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// Defined in linker script | ||
extern uint8_t dma_ram_r_start; | ||
extern uint8_t dma_ram_r_end; | ||
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extern uint8_t dma_ram_w_start; | ||
extern uint8_t dma_ram_w_end; | ||
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extern uint8_t dma_ram_rw_start; | ||
extern uint8_t dma_ram_rw_end; | ||
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mpuRegion_t mpuRegions[] = { | ||
{ | ||
// DMA_RAM_R | ||
// DMA receive buffer in SRAM | ||
.start = (uint32_t)&dma_ram_r_start, | ||
.end = (uint32_t)&dma_ram_r_end, | ||
.size = 0, // Size determined by ".end" | ||
.perm = MPU_REGION_FULL_ACCESS, | ||
.exec = MPU_INSTRUCTION_ACCESS_ENABLE, | ||
.shareable = MPU_ACCESS_SHAREABLE, | ||
.cacheable = MPU_ACCESS_NOT_CACHEABLE, | ||
.bufferable = MPU_ACCESS_BUFFERABLE, | ||
}, | ||
{ | ||
// DMA_RAM_W | ||
// DMA transmit buffer in SRAM | ||
.start = (uint32_t)&dma_ram_w_start, | ||
.end = (uint32_t)&dma_ram_w_end, | ||
.size = 0, // Size determined by ".end" | ||
.perm = MPU_REGION_FULL_ACCESS, | ||
.exec = MPU_INSTRUCTION_ACCESS_ENABLE, | ||
.shareable = MPU_ACCESS_SHAREABLE, | ||
.cacheable = MPU_ACCESS_CACHEABLE, | ||
.bufferable = MPU_ACCESS_NOT_BUFFERABLE, | ||
}, | ||
{ | ||
// DMA_RAM_RW | ||
// DMA transmit and receive buffer in SRAM | ||
.start = (uint32_t)&dma_ram_rw_start, | ||
.end = (uint32_t)&dma_ram_rw_end, | ||
.size = 0, // Size determined by ".end" | ||
.perm = MPU_REGION_FULL_ACCESS, | ||
.exec = MPU_INSTRUCTION_ACCESS_ENABLE, | ||
.shareable = MPU_ACCESS_SHAREABLE, | ||
.cacheable = MPU_ACCESS_NOT_CACHEABLE, | ||
.bufferable = MPU_ACCESS_NOT_BUFFERABLE, | ||
}, | ||
}; | ||
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unsigned mpuRegionCount = ARRAYLEN(mpuRegions); |